Another possibility, they are all dead for the reason that new characters are going to take their place--characters that maybe Hasbro has hopes would steer the Joe story to something new--to re-invent GI Joe.

Hadn't Hasbro lost the copyright to the name "Roadblock"? Why? Was there a lack of interest in Roadblock for long-term Joe stories? Maybe this is a way to kill him off in a blaze of glory for the fans, and still be-done with the character. Onward to new characters with fresher copyrights.

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